CG-computer Graphics -pixel ,resolution aspect ratio PDF

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CG-computer Graphics -what is a pixel ,resolution aspect ratio in graphics whats a frame buffer...

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A pixel is the smallest unit of a digital image or graphic that can be displayed and represented on a digital display device. A pixel is the basic logical unit in digital graphics. Pixels are combined to form a complete image, video, text, or any visible thing on a computer display. he full form of the pixel is "Picture Element." It is also known as "PEL." Pixel is the smallest element of an image on a computer display, whether they are LCD or CRT monitors. A screen is made up of a matrix of thousands or millions of pixels. A pixel is represented with a dot or a square on a computer screen. The good thing is that a pixel cannot be seen as they are very small which result in a smooth and clear image rather than "pixelated." Each pixel has a value, or we can say a unique logical address. It can have only one color at a time. Colour of a pixel is determined by the number of bits which is used to represent it. A resolution of a computer screen depends upon graphics card and display monitor, the quantity, size and color combination of pixels.

Calculation of the total number of pixels Below is the formula to calculate the total number of pixel in an image.

A framebuffer (frame buffer, or sometimes framestore) is a portion of random-access memory (RAM) containing a bitmap( JUST A MAP OF BITS) that drives a video display. It is a memory buffer containing data representing all the pixels in a complete video frame. Modern video cards contain framebuffer circuitry in their cores. a bitmap is an array of binary data representing the values of pixels in an image or display. In some contexts, the term bitmap implies one bit per pixel, while pixmap is used for images with multiple bits per pixel....